An eclipse is an astronomical event that occurs when an astronomical object is temporarily obscured,either by passing into the shadow of another body or by having another body pass between it and the viewer.This alignment of three celestial objects is known as a syzygy. Apart from syzygy, the term eclipse isalso used when a spacecraft reaches a position where it can observe two celestial bodies so aligned.An eclipse is the result of either an occultation (completely hidden) or a transit (partially hidden).[from wikipedia]

Halloween or Hallowe'en (a contraction of All Hallows' Evening),also known as Allhalloween, All Hallows' Eve, or All Saints' Eve, is a celebration observed in a number of countries on 31 October, the eve of the Western Christian feast of All Hallows' Day and the Reformation Day. It begins the three-day observance of Allhallowtide, the time in the liturgical year dedicated to remembering the dead, including saints (hallows), martyrs, and all the faithful departed. [from wikipedia]